Synthesis of 2-arylbenzimidazoles via microwave Suzuki–Miyaura reaction of unprotected 2-chlorobenzimidazoles
摘要:
A series of 2-arylbenzimidazoles were synthesized via microwave-mediated Suzuki-Miyaura coupling of 2-chloro benzimidazoles and either arylboronic acids or aryltrifluoroborate salts. The most notable aspect of the present work is that there is no need for protection of the benzimidazoles. In addition, reaction conditions were optimized to reduce homo coupling of pyridylboronic acids. (C) 2008 Elsevier Ltd. All rights reserved.
NOVEL COMPOUND HAVING SKIN-WHITENING, ANTI-OXIDIZING AND PPAR ACTIVITIES AND MEDICAL USE THEREFOR
申请人:Chung Hae Young
公开号:US20140037564A1
公开(公告)日:2014-02-06
Provided are a novel compound having skin-whitening, anti-oxidizing and PPAR activities and a medical use thereof, and the compound has skin-whitening activities for the suppression of tyrosinase, and accordingly, is useful for use in skin-whitening pharmaceutical composition or cosmetic products; has anti-oxidant activities, and accordingly, is useful for the prevention and treatment of skin-aging; and has PPAR activities, and in particular, PPARα and PPARγ activities, and accordingly, is useful for use in pharmaceutical compositions or health foods which are effective for the prevention and treatment of obesity, metabolic disease, or cardiovascular disease.
Conventional and Microwave-Assisted Synthesis of Benzimidazole Derivatives and Their<i>In Vitro</i>Inhibition of Human Cyclooxygenase
作者:Daniela Secci、Adriana Bolasco、Melissa D'Ascenzio、Flavio della Sala、Matilde Yáñez、Simone Carradori
DOI:10.1002/jhet.1058
日期:2012.9
A large series of 1,2‐diaryl‐benzimidazole and 2‐aryl‐1H‐benzimidazolederivatives were synthesized with slight differences using both microwave irradiation and conventional heating methods. Usually higher yields and time reactions reduction were obtained with the former method. All compounds were assayed for their in vitro ability to inhibit humancyclooxygenases, and most of them showed an encouraging
NOVEL COMPOUND HAVING SKIN-WHITENING, ANTI-OXIDIZING AND PPAR ACTIVITIES AND MEDICAL USE THEREOF
申请人:Pusan National University Industry-University Cooperation Foundation
公开号:US20150366776A1
公开(公告)日:2015-12-24
Provided are a novel compound having skin-whitening, anti-oxidizing and PPAR activities and a medical use thereof, and the compound has skin-whitening activities for the suppression of tyrosinase, and accordingly, is useful for use in skin-whitening pharmaceutical composition or cosmetic products; has anti-oxidant activities, and accordingly, is useful for the prevention and treatment of skin-aging; and has PPAR activities, and in particular, PPARα and PPARγ activities, and accordingly, is useful for use in pharmaceutical compositions or health foods which are effective for the prevention and treatment of obesity, metabolic disease, or cardiovascular disease.